EP1286097A2 - Connection between the end of a helically corrugated metal pipe and a fitting - Google Patents

Connection between the end of a helically corrugated metal pipe and a fitting Download PDF

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Publication number
EP1286097A2
EP1286097A2 EP02016463A EP02016463A EP1286097A2 EP 1286097 A2 EP1286097 A2 EP 1286097A2 EP 02016463 A EP02016463 A EP 02016463A EP 02016463 A EP02016463 A EP 02016463A EP 1286097 A2 EP1286097 A2 EP 1286097A2
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EP
European Patent Office
Prior art keywords
metal tube
thread
corrugated metal
sleeve
helically corrugated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP02016463A
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German (de)
French (fr)
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EP1286097A3 (en
EP1286097B1 (en
Inventor
Jörn Dipl.-Ing. Homann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Brugg Rohr AG Holding
Original Assignee
Brugg Rohrsysteme GmbH
Brugg Rohr AG Holding
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Publication of EP1286097A2 publication Critical patent/EP1286097A2/en
Publication of EP1286097A3 publication Critical patent/EP1286097A3/en
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Publication of EP1286097B1 publication Critical patent/EP1286097B1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L25/00—Constructive types of pipe joints not provided for in groups F16L13/00 - F16L23/00 ; Details of pipe joints not otherwise provided for, e.g. electrically conducting or insulating means
    • F16L25/0036—Joints for corrugated pipes

Definitions

  • the invention relates to a connection between the end of a helically corrugated metal tube with a fitting.
  • the problem is the production of a compound of thin-walled metal pipes with each other or with a flange, as a screwing or welding because of the small wall thickness is difficult to carry out, and a soldering only makes sense in a few metals.
  • connection fitting for helical corrugated metal tubes known which screwed onto the corrugated pipe end External bushing with a corrugated pipe projecting smooth tube approach.
  • the smooth tube approach has an internal thread into which a connecting pipe piece is screwed in.
  • the connecting pipe piece penetrates with a stepped end in the corrugated tube.
  • the seal is made by one in the last Waves embedded sealing cord made of graphite, which during compression of the Curl deformed and against the inner wall of the outer bush and in the Corrugated tube end penetrated stepped end of the pipe socket is pressed.
  • a sealing packing for sealing corrugated pipes consisting of two on the corrugated pipe against each other movable and nested bushes exists, between which a the Corrugated tube comprehensive annular space for receiving a sealant is formed. It is provided from the inside to the sealing area applying corrugated tube sleeve. As a sealant graphite is proposed.
  • the present invention has for its object to provide a compound for to provide helically corrugated metal tubes with a connector, which consists of simple components and can be mounted without special tools.
  • the main advantage of the invention is the fact that the seal in the Force bypass is and thus forces and bending moments over the Connecting parts are derived. This leads to a permanent seal as well with strong temperature fluctuations.
  • a particular advantage is that the compound of the invention for a two of the corrugated pipes existing pipe is particularly suitable.
  • Such a conduit has a thermal barrier coating between the corrugated pipes made of foamed plastic and is preferably used as District heating pipe.
  • FIGS 1 to 3 show the sequence for the preparation of the inventive Connection.
  • FIG. 4 shows an enlarged detail of the finished connection in FIG Sealing area shown.
  • a Pressure ring 2 On the end of a helically corrugated metal tube 1 is a Pressure ring 2 adapted by means of a helical corrugation Grobgewindes 2a screwed.
  • the pressure ring 2 has a sleeve-shaped Approach 2b, which has a larger inner diameter than the metal tube. 1 On its inner surface, an internal thread 2c is provided. The pressure ring 2 is so far screwed onto the end of the metal tube 1 that the sleeve-shaped Approach 2b projects beyond the end of the metal tube 1.
  • a sealing ring 3 is inserted, the longitudinal axial extent is dimensioned so that its one end with the end of the metal tube 1. Its opposite end is supported on the inner edge of the pressure ring 2.
  • the pressure ring 2 is advantageously made of graphite with an initial density of 1.0 to 1.5 g / cm 3 .
  • the connector 4 has on its outer surface an external thread 4a, whose pitch corresponds to the pitch of the internal thread 2c of the lug 2.
  • the fitting 4 At his the end of the metal tube 1 facing end, the fitting 4 a hollow cylindrical projection 4b, whose outer diameter approximately is equal to the inner diameter of the metal tube 1.
  • the hollow cylindrical projection 4b supports the deformed waves of the metal tube 1 off.

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  • General Engineering & Computer Science (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Joints That Cut Off Fluids, And Hose Joints (AREA)
  • Gasket Seals (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Details Of Indoor Wiring (AREA)
  • Joints Allowing Movement (AREA)
  • Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
  • Joints With Pressure Members (AREA)
  • Package Frames And Binding Bands (AREA)
  • Clamps And Clips (AREA)
  • Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)

Abstract

Connection between the end of a metal tube (1) having a screw-like thread and a connecting piece (4) comprises a pressure ring (2) with a corresponding thread (2a) screwed onto the end of the metal tube. The pressure ring has a sleeve-like adapter (2b) having an internal thread (2c) and a greater internal diameter than the metal tube thread. The connecting piece with its outer thread (4a) on its outer surface is screwed into the internal thread of the sleeve-like adapter. The connecting piece has a hollow cylindrical adapter (4b) protruding into the end of the metal tube and an outer diameter that is the same or slightly smaller than the internal diameter of the metal tube. A hollow space in which a graphite sealing ring (3) is arranged is formed between the pressure ring, the sleeve-like adapter, a side surface of the connecting piece, and the end of the metal tube. The sealing ring is compressed on screwing on the connecting piece and completely fills the subsequent ly reduced hollow space.

Description

Die Erfindung betrifft eine Verbindung zwischen dem Ende eines schraubenlinienförmig gewellten Metallrohres mit einem Anschlußstück.The invention relates to a connection between the end of a helically corrugated metal tube with a fitting.

Zur Herstellung einer Verbindung von Metallrohren miteinander bzw. einer Verbindung zwischen einem Metallrohr und einem Anschlußstück gibt es mannigfaltige Lösungen. So ist es üblich, die genannten Bauteile miteinander zu verlöten oder zu verschweißen bzw. zu verschrauben.For producing a connection of metal pipes with each other or one There is a connection between a metal pipe and a fitting varied solutions. So it is customary, the said components together soldered or welded or screwed.

Problematisch ist die Herstellung einer Verbindung von dünnwandigen Metallrohren miteinander bzw. mit einem Flansch, da ein Verschrauben oder Verschweißen wegen der geringen Wanddicke nur schwer durchführbar ist, und ein Verlöten nur bei wenigen Metallen sinnvoll ist.The problem is the production of a compound of thin-walled metal pipes with each other or with a flange, as a screwing or welding because of the small wall thickness is difficult to carry out, and a soldering only makes sense in a few metals.

Noch komplizierter gestaltet sich der Anschluß eines schraubenlinienförmig gewellten dünnwandigen Metallrohres an einen Flansch.Even more complicated is the connection of a helical corrugated thin-walled metal tube to a flange.

Aus der CH-PS 589 249 ist es bekannt, das Ende eines gewellten Metallrohres gegen die Innenfläche eines Flansches zu walzen, wobei die Wellung eingeebnet wird. Durch den beim Walzen anstehenden hohen Anpreßdruck entsteht zwischen dem ehemals gewellten Metallrohr und dem Metallflansch eine dichte Preßverbindung. Diese Art der Verbindung erfordert einen hohen apparativen Aufwand an der Montagestelle und setzt dickwandige Formteile voraus.From CH-PS 589 249 it is known the end of a corrugated metal tube To roll against the inner surface of a flange, wherein the corrugation leveled becomes. Due to the high contact pressure applied during rolling, the result is between the formerly corrugated metal tube and the metal flange a dense Press connection. This type of connection requires a high level of apparatus Expenditure at the installation site and requires thick-walled moldings.

Eine andere Verbindungsart für gewellte Metallrohre ist in der DE-PS 33 02 450 beschrieben. Auf das Ende eines gewellten Rohres wird eine Stützbuchse geschraubt, und ein Rohrstutzen in das Ende des gewellten Rohres geschraubt. Die Abdichtung ergibt sich dadurch, daß die lichte Weite der Stützbuchse zum Ende hin zunimmt und/oder der Außendurchmesser des Rohrstutzens zum Ende hin abnimmt. Beim Einschrauben des Rohrstutzens in das durch ein Formwerkzeug der Innenkontur der Außenbuchse angepaßte Wellrohrende wird das Wellrohr zwischen dem Rohrstutzen und der Stützbuchse abgedichtet.Another type of connection for corrugated metal pipes is in DE-PS 33 02 450th described. On the end of a corrugated pipe is a support bushing screwed, and a pipe socket screwed into the end of the corrugated pipe. The Sealing results from the fact that the clear width of the support bush towards the end increases and / or the outer diameter of the pipe socket towards the end decreases. When screwing the pipe socket into the through a mold of the Inner contour of the outer sleeve adapted corrugated pipe end is the corrugated pipe sealed between the pipe socket and the support sleeve.

Aus der DE-OS 40 27 818 ist eine Anschlußarmatur für schraubenlinienförmig gewellte Metallrohre bekannt, die eine auf das Wellrohrende aufgeschraubte Außenbuchse mit einem das Wellrohrende überragenden Glattrohransatz aufweist. Der Glattrohransatz besitzt ein Innengewinde, in welches ein Anschlußrohrstück eingeschraubt wird. Das Anschlußrohrstück dringt mit einem abgestuften Ende in das Wellrohr ein. Beim Einschrauben des Anschlußrohrstücks wird die Wellung des Wellrohres am Ende gestaucht. Die Abdichtung erfolgt durch eine in die letzten Wellengänge eingelegte Dichtungsschnur aus Graphit, die beim Stauchen der Wellung verformt und gegen die Innenwandung der Außenbuchse und das in das Wellrohrende eingedrungene abgestufte Ende des Rohrstutzens gepreßt wird.From DE-OS 40 27 818 a connection fitting for helical corrugated metal tubes known which screwed onto the corrugated pipe end External bushing with a corrugated pipe projecting smooth tube approach. The smooth tube approach has an internal thread into which a connecting pipe piece is screwed in. The connecting pipe piece penetrates with a stepped end in the corrugated tube. When screwing in the connecting pipe piece, the corrugation of the Corrugated tube at the end compressed. The seal is made by one in the last Waves embedded sealing cord made of graphite, which during compression of the Curl deformed and against the inner wall of the outer bush and in the Corrugated tube end penetrated stepped end of the pipe socket is pressed.

Aus der DE-A-3 341 297 ist eine Dichtpackung zum Abdichten von Wellrohren bekannt, die aus zwei auf dem Wellrohr angeordneten gegeneinander bewegbaren und ineinander fassenden Buchsen besteht, zwischen welchen ein das Wellrohr umfassender Ringraum zur Aufnahme einer Dichtmasse gebildet wird. Es ist eine sich von innen an den Dichtbereich anlegende Wellrohrhülse vorgesehen. Als Dichtmasse wird Graphit vorgeschlagen.From DE-A-3 341 297 a sealing packing for sealing corrugated pipes is provided known, consisting of two on the corrugated pipe against each other movable and nested bushes exists, between which a the Corrugated tube comprehensive annular space for receiving a sealant is formed. It is provided from the inside to the sealing area applying corrugated tube sleeve. As a sealant graphite is proposed.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Verbindung für schraubenlinienförmig gewellte Metallrohre mit einem Anschlußteil bereitzustellen, die aus einfachen Bauteilen besteht und ohne Spezialwerkzeuge montierbar ist. The present invention has for its object to provide a compound for to provide helically corrugated metal tubes with a connector, which consists of simple components and can be mounted without special tools.

Insbesondere soll auf den Einsatz von Schweiß- oder Lötwerkzeugen verzichtet werden.In particular, should be dispensed with the use of welding or soldering tools become.

Die Erfindung ist anhand des in den Figuren 1 bis 4 schematisch dargestellten Ausführungsbeispiels näher erläutert.The invention is based on that shown schematically in Figures 1 to 4 Embodiment explained in more detail.

Diese Aufgabe wird durch die im Anspruch 1 erfaßten Merkmale gelöst.This object is achieved by the features detected in claim 1.

Der wesentliche Vorteil der Erfindung ist darin zu sehen, daß sich die Dichtung im Kraftnebenschluß befindet und somit Kräfte und Biegemomente über die Anschlußteile abgeleitet werden. Dies führt zu einer dauerhaften Abdichtung auch bei kräftigen Temperaturschwankungen.The main advantage of the invention is the fact that the seal in the Force bypass is and thus forces and bending moments over the Connecting parts are derived. This leads to a permanent seal as well with strong temperature fluctuations.

Ein besonderer Vorteil besteht noch darin, daß die erfindungsgemäße Verbindung für ein aus zwei den Wellrohren bestehendes Leitungsrohr besonders geeignet ist. Ein solches Leitungsrohr weist zwischen den Wellrohren eine Wärmedämmschicht aus aufgeschäumtem Kunststoff und findet bevorzugt Anwendung als Fernwärmeleitungsrohr.A particular advantage is that the compound of the invention for a two of the corrugated pipes existing pipe is particularly suitable. Such a conduit has a thermal barrier coating between the corrugated pipes made of foamed plastic and is preferably used as District heating pipe.

Weitere vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen erfaßt.Further advantageous embodiments of the invention are in the subclaims detected.

Die Figuren 1 bis 3 zeigen den Ablauf zur Herstellung der erfindungsgemäßen Verbindung.Figures 1 to 3 show the sequence for the preparation of the inventive Connection.

In Figur 4 ist ein vergrößerter Ausschnitt der fertiggestellten Verbindung im Abdichtungsbereich dargestellt.FIG. 4 shows an enlarged detail of the finished connection in FIG Sealing area shown.

Auf das Ende eines schraubenlinienfömig gewellten Metallrohres 1 wird ein Druckring 2 mittels eines der schraubenlinienförmigen Wellung angepaßten Grobgewindes 2a aufgeschraubt. Der Druckring 2 weist einen hülsenförmigen Ansatz 2b auf, der einen größeren Innendurchmesser aufweist als das Metallrohr 1. An seiner inneren Oberfläche ist ein Innengewinde 2c vorgesehen. Der Druckring 2 ist soweit auf das Ende des Metallrohres 1 aufgeschraubt, daß der hülsenförmige Ansatz 2b das Ende des Metallrohres 1 überragt.On the end of a helically corrugated metal tube 1 is a Pressure ring 2 adapted by means of a helical corrugation Grobgewindes 2a screwed. The pressure ring 2 has a sleeve-shaped Approach 2b, which has a larger inner diameter than the metal tube. 1 On its inner surface, an internal thread 2c is provided. The pressure ring 2 is so far screwed onto the end of the metal tube 1 that the sleeve-shaped Approach 2b projects beyond the end of the metal tube 1.

In den zwischen dem Metallrohr 1 und dem Ansatz 2b gebildeten Ringspalt wird ein Dichtring 3 eingeschoben, dessen längsaxiale Ausdehnung so bemessen ist, daß sein eines Ende mit dem Ende des Metallrohres 1 abschließt. Sein entgegengesetztes Ende stützt sich an der inneren Flanke des Druckringes 2 ab. Durch Vor- bzw. Rückschrauben des Druckringes 2 wird sichergestellt, daß der Druckring 2 mit dem Ende des Wellrohres abschließt. Der Druckring 2 ist vorteilhafterweise aus Graphit mit einer Ausgangsdichte von 1.0 bis 1,5 g/cm3 hergestellt.In the annular gap formed between the metal tube 1 and the projection 2b, a sealing ring 3 is inserted, the longitudinal axial extent is dimensioned so that its one end with the end of the metal tube 1. Its opposite end is supported on the inner edge of the pressure ring 2. By forward or backward screwing of the pressure ring 2 ensures that the pressure ring 2 terminates with the end of the corrugated pipe. The pressure ring 2 is advantageously made of graphite with an initial density of 1.0 to 1.5 g / cm 3 .

Das Anschlußstück 4 besitzt an seiner äußeren Oberfläche ein Außengewinde 4a, dessen Steigung der Steigung des Innengewindes 2c des Ansatzes 2 entspricht. An seinem dem Ende des Metallrohres 1 zugekehrten Ende weist das Anschlußstück 4 einen hohlzylindrischen Ansatz 4b auf, dessen Außendurchmesser annähernd gleich dem Innendurchmesser des Metallrohres 1 ist.The connector 4 has on its outer surface an external thread 4a, whose pitch corresponds to the pitch of the internal thread 2c of the lug 2. At his the end of the metal tube 1 facing end, the fitting 4 a hollow cylindrical projection 4b, whose outer diameter approximately is equal to the inner diameter of the metal tube 1.

Wie in Figur 2 dargestellt wird das Anschlußstück 4 mit dem Druckring 2 mit Hilfe der Gewinde 2c und 4 verschraubt. Dabei dringt der Ansatz 4b in das Ende des Metallrohres 1 ein. Auf diese Weise entsteht eine den Dichtring 3 aufnehmende Kammer 5, die durch das Ende des Metallrohres 1, der inneren Stirnfläche des Druckrings 2, den Ansatz 2b sowie die zwischen dem Ansatz 4b und dem Gewinde 4a vertikal zur Längsachse des Metallrohres 1 verlaufende Stirnfläche des Anschlußstücks 4 begrenzt ist.As shown in Figure 2, the fitting 4 with the pressure ring 2 by means of the thread 2c and 4 screwed. The approach 4b penetrates into the end of the Metal tube 1 a. In this way, a sealing ring 3 receiving Chamber 5, through the end of the metal tube 1, the inner face of the Pressure ring 2, the neck 2b and between the neck 4b and the thread 4a extending vertically to the longitudinal axis of the metal tube 1 end face of Connecting piece 4 is limited.

Durch weiteres Einschrauben des Anschlußstücks 4 in den Ansatz 2b wird das Volumen der Kammer 5 allmählich verringert und der Dichtring 5 verformt und komprimiert. Für diesen Kompressionsvorgang ist es wichtig, daß das Verbindungsgewinde (Innengewinde 2c und Außengewinde 4a) gegensinnig zur Steigung der Wellung des Metallrohres verläuft. Dadurch wird verhindert, daß sich beim Verschrauben der Druckring 2 auf dem gewellten Metallrohr 1 verdreht. By further screwing the fitting 4 in the neck 2b is the Volume of the chamber 5 is gradually reduced and the sealing ring 5 is deformed and compressed. For this compression process, it is important that the Connection thread (internal thread 2c and external thread 4a) in opposite directions to Slope of the corrugation of the metal pipe runs. This prevents that from happening screwed when screwing the pressure ring 2 on the corrugated metal tube 1.

Beim Verschrauben des Anschlußstücks 4 mit dem Druckring 2 wird nicht nur der Dichtring 3 komprimiert, sondern es werden auch die zwischen dem Grobgewinde 2a und dem Ende des Metallrohres 1 befindlichen Wellengänge gestaucht. Es wirken also nicht nur längsaxiale Kräfte sondern auch radiale Kräfte auf den Dichtring 3 ein. Die notwendige Flächenpressung wird über einen Gesamtverformungsweg von 50 - 70 % der Ausgangslänge erzeugt.When screwing the fitting 4 with the pressure ring 2 is not only the Sealing ring 3 compresses, but it will be between the coarse thread 2a and the end of the metal tube 1 located swells. It Thus, not only longitudinal axial forces but also radial forces act on the Seal 3 a. The necessary surface pressure is over a Total deformation of 50 - 70% of the original length generated.

In der äußeren Oberfläche des Anschlußstücks 4 ist zwischen dem Gewinde 4a und der dem Wellrohrende zugekehrten Stirnfläche des Anschlußstücks 4 eine sogenannte Räumnut 4c vorgesehen. Diese Räumnut 4c nimmt den aus dem Verbindungsgewinde (2c und 4a) ausgeschälten Graphit auf und verhindert somit, daß das Verbindungsgewinde (2c und 4a) blockiert.In the outer surface of the fitting 4 is between the thread 4a and the corrugated pipe end facing end face of the connecting piece 4 a so-called broil 4c provided. This fumigant 4c takes the from the Connecting thread (2c and 4a) on graphite and thus prevents that the connecting thread (2c and 4a) blocked.

Der hohlzylindrische Ansatz 4b stützt die verformten Wellengänge des Metallrohres 1 ab.The hollow cylindrical projection 4b supports the deformed waves of the metal tube 1 off.

Claims (8)

Verbindung zwischen dem Ende eines schraubenlinienförmig gewellten Metallrohres mit einem Anschlußstück, bei dem a) auf das Ende des schraubenlinienförmig gewellten Metallrohres ein Druckring mit einem der schraubenlinienförmigen Wellung angepaßten Gewinde aufgeschraubt ist, b) der Druckring einen hülsenförmigen Ansatz aufweist, der einen größeren Innendurchmesser als das Gewindes besitzt, c) der hülsenförmige Ansatz des Druckringes ein Innengewinde aufweist, d) das Anschlußstück mit einem an seiner äußeren Oberfläche befindlichen Außengewinde in das Innengewinde des hülsenförmigen Ansatzes eingeschraubt ist, e) das Anschlußstück einen in das Ende des schraubenlinienförmig gewellten Metallrohres hineinragenden hohlzylindrischen Ansatz aufweist, dessen Außendurchmesser gleich oder geringfügig kleiner ist als der Innendurchmesser des schraubenlinienförmig gewellten Metallrohres, f) zwischen dem Druckring, dem hülsenförmigen Ansatz, einer Stirnfläche des Anschlußstücks und dem Ende des schraubenlinienförmigen gewellten Metallrohres ein Hohlraum befindlich ist, in welchem ein Dichtungsring angeordnet ist und g) der Dichtungsring durch das Einschrauben des Anschlußstücks und der dadurch entstehenden Verkleinerung des Hohlraums komprimiert ist und den verkleinerten Hohlraum vollständig ausfüllt. Connection between the end of a helically corrugated metal tube with a fitting, in which a) a pressure ring with a thread adapted to the helical corrugation is screwed onto the end of the helically corrugated metal tube, b) the pressure ring has a sleeve-shaped projection which has a larger inner diameter than the thread, c) the sleeve-shaped projection of the pressure ring has an internal thread, d) the connecting piece is screwed with a male thread located on its outer surface in the internal thread of the sleeve-shaped projection, e) the connecting piece has a hollow-cylindrical projection projecting into the end of the helically corrugated metal tube, the outer diameter of which is equal to or slightly smaller than the inner diameter of the helically corrugated metal tube, f) between the pressure ring, the sleeve-shaped projection, an end face of the fitting and the end of the helical corrugated metal tube, a cavity is located, in which a sealing ring is arranged and g) the sealing ring is compressed by screwing the fitting and the resulting reduction of the cavity and completely fills the reduced cavity. Verbindung nach Anspruch 1, dadurch gekennzeichnet, daß der Dichtring aus Graphit besteht.A compound according to claim 1, characterized in that the sealing ring consists of graphite. Verbindung nach Anspruch 2, dadurch gekennzeichnet, daß der Dichtring aus Graphit mit einer Ausgangsrohdichte von 1,0 bis 1,5 g/cm3 besteht.A compound according to claim 2, characterized in that the sealing ring consists of graphite with a starting density of 1.0 to 1.5 g / cm 3 . Verbindung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Dichtring mit dem Ende des schraubenlinienförmig gewellten Metallrohres abschließt.A compound according to any one of claims 1 to 3, characterized in that the sealing ring is flush with the end of the helically corrugated metal tube. Verbindung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das Ende des schraubenlinienförmig gewellten Metallrohres gestaucht ist.Connection according to one of claims 1 to 4, characterized in that the end of the helically corrugated metal tube is compressed. Verbindung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß das Anschlußstück an seiner äußeren Oberfläche zwischen seinem dem Ende des schraubenlinienförmig gewellten Metallrohres zugekehrte Ende und dem Außengewinde eine umlaufende Nut aufweist.Connection according to one of claims 1 to 5, characterized in that the connecting piece has on its outer surface between its end facing the end of the helically corrugated metal tube facing the end and the external thread a circumferential groove. Verbindung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Richtung des Innengewindes des hülsenförmigen Ansatzes und das Außengewindes des Anschlußstücks ein gegenüber der schraubenlinienförmigen Wellung des Metallrohres gegensinnige Richtung aufweisen.Connection according to one of claims 1 to 6, characterized in that the direction of the internal thread of the sleeve-shaped projection and the external thread of the connector have a relation to the helical corrugation of the metal tube in the opposite direction. Verbindung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß der Hohlraum auf weniger als 30 % gegenüber dem Beginn des Aufschraubens verkleinert ist.A compound according to any one of claims 1 to 7, characterized in that the cavity is reduced to less than 30% of the beginning of the screwing.
EP02016463A 2001-08-22 2002-07-23 Connection between the end of a helically corrugated metal pipe and a fitting Expired - Lifetime EP1286097B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20113861U DE20113861U1 (en) 2001-08-22 2001-08-22 Connection between the end of a helically corrugated metal tube with a connector
DE20113861U 2001-08-22

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EP1286097A2 true EP1286097A2 (en) 2003-02-26
EP1286097A3 EP1286097A3 (en) 2003-10-08
EP1286097B1 EP1286097B1 (en) 2005-09-14

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EP (1) EP1286097B1 (en)
JP (1) JP4181819B2 (en)
AT (1) ATE304677T1 (en)
CZ (1) CZ300876B6 (en)
DE (2) DE20113861U1 (en)
DK (1) DK1286097T3 (en)
ES (1) ES2249516T3 (en)
PL (1) PL199257B1 (en)
PT (1) PT1286097E (en)

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EP3088788A1 (en) * 2015-04-30 2016-11-02 Witzenmann GmbH Connection device for a fluid conducting means
US11378207B2 (en) 2019-11-22 2022-07-05 Trinity Bay Equipment Holdings, LLC Swaged pipe fitting systems and methods
US11680666B2 (en) 2018-07-25 2023-06-20 FlexiGas UKC Ltd Connector assembly

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EP3088788A1 (en) * 2015-04-30 2016-11-02 Witzenmann GmbH Connection device for a fluid conducting means
EP3168518A1 (en) 2015-04-30 2017-05-17 Witzenmann GmbH Connection device for a fluid conducting means
US11680666B2 (en) 2018-07-25 2023-06-20 FlexiGas UKC Ltd Connector assembly
US11378207B2 (en) 2019-11-22 2022-07-05 Trinity Bay Equipment Holdings, LLC Swaged pipe fitting systems and methods

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CZ300876B6 (en) 2009-09-02
ATE304677T1 (en) 2005-09-15
CZ20022820A3 (en) 2003-09-17
JP4181819B2 (en) 2008-11-19
DK1286097T3 (en) 2005-12-27
JP2003161394A (en) 2003-06-06
DE50204236D1 (en) 2005-10-20
PL355307A1 (en) 2003-02-24
PL199257B1 (en) 2008-08-29
EP1286097A3 (en) 2003-10-08
EP1286097B1 (en) 2005-09-14
DE20113861U1 (en) 2002-01-24
PT1286097E (en) 2005-11-30
ES2249516T3 (en) 2006-04-01

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